ElasticSearch 搜索實例

 ElasticSearch 搜索，需要進行分類的搜索，同時搜索關鍵字。

public Map search(Map<String, String> searchMap) {

    //1.獲取關鍵字的值
    String keywords = searchMap.get("keywords");

    if (StringUtils.isEmpty(keywords)) {
        keywords = "華爲";//賦值給一個默認的值
    }
    //2.創建查詢對象 的構建對象
    NativeSearchQueryBuilder nativeSearchQueryBuilder = new NativeSearchQueryBuilder();

    //3.設置查詢的條件
    //設置分組條件  商品分類
    nativeSearchQueryBuilder.addAggregation(AggregationBuilders.terms("skuCategorygroup").field("categoryName").size(50));
    nativeSearchQueryBuilder.withQuery(QueryBuilders.matchQuery("name", keywords));

    //4.構建查詢對象
    NativeSearchQuery query = nativeSearchQueryBuilder.build();

    //5.執行查詢
    AggregatedPage<SkuInfo> skuPage = esTemplate.queryForPage(query, SkuInfo.class);

    //獲取分組結果
    StringTerms stringTerms = (StringTerms) skuPage.getAggregation("skuCategorygroup");
    List<String> categoryList = new ArrayList<>();
    if (stringTerms != null) {
        for (StringTerms.Bucket bucket : stringTerms.getBuckets()) {
            String keyAsString = bucket.getKeyAsString();//分組的值
            categoryList.add(keyAsString);
        }
    }

    //6.返回結果
    Map resultMap = new HashMap<>();
    resultMap.put("categoryList", categoryList);
    resultMap.put("rows", skuPage.getContent());
    resultMap.put("total", skuPage.getTotalElements());
    resultMap.put("totalPages", skuPage.getTotalPages());

    return resultMap;
}